Description
The Shelly 3EM-63 Gen3 is a compact and efficient smart energy meter, designed to monitor a three-phase system or three independent single-phase circuits. It is ideal for residential, commercial and industrial applications where accurate real-time energy consumption measurement is required.
The device provides comprehensive data on voltage, current, active and apparent power for each phase, helping to analyse consumption, optimise costs and detect operational issues.
The Shelly 3EM-63 Gen3 can operate standalone on a local Wi-Fi network or be integrated into cloud systems and automation via MQTT, HTTP and WebSocket. In addition, it features a built-in web interface for quick configuration and monitoring.
It is available in two variants:
-
Shelly 3EM-63W Gen3 – wired model
-
Shelly 3EM-63T Gen3 – flat terminal model
Key features
- Smart meter for three-phase systems or three single-phase circuits
-
4-quadrant measurement
- Measured current up to 63A per phase
-
Wi-Fi + Bluetooth connectivity
- Real-time monitoring for:
- voltage
- current
- active power
- apparent power
- power factor
- Data storage for up to 7 days
- Compatible with Android and iOS
- Integrated web interface
- Ready for photovoltaic applications
Features and benefits
? Comprehensive 3-phase monitoring – The Shelly 3EM-63 Gen3 gives you a clear picture of consumption on each phase, making it ideal for distribution boards, homes, commercial buildings or photovoltaic systems.
? Accurate and reliable measurement - With an accuracy of approximately ±1%, the device is suitable for both energy analysis and optimising consumption and checking equipment performance.
? Compact installation - Thanks to its compact design, it can be mounted above or below DIN-rail-mounted circuit breakers, saving space in the panel.
? Historical analysis and data export - Data is stored locally for up to 7 days, with a resolution of 1 minute, and can be exported in CSV or JSON format.
? Ideal for prosumers and photovoltaic systems – The device is ready for monitoring consumption and production in photovoltaic installations, making it very useful for optimising self-consumption.
? Local and remote access – You can monitor consumption both locally and remotely, via the app or web interface.
Applications
- Three-phase consumption monitoring
- Monitoring of three independent single-phase circuits
- Residential and commercial switchboards
- Photovoltaic systems / prosumers
- Energy consumption analysis and optimisation
- Equipment monitoring and consumption diagnostics
| General information |
| Model |
Shelly 3EM-63 Gen3 (S3EM-003CXCEU63) |
| Available variants |
3EM-63W Gen3 / 3EM-63T Gen3 |
| Product type |
Three-phase smart meter / 3 single-phase circuits |
| Installation |
Above or below circuit breakers on a DIN rail |
| Power supply |
| Supply voltage |
220–240 V AC, 50/60 Hz |
| Power consumption |
< 2 W |
| Energy measurement |
| System type |
Three-phase or 3 single-phase circuits |
| Measured current |
0–63 A per phase |
| Saturation |
130 A |
| Measured voltage |
220–240 V AC per phase |
| Voltmeter accuracy |
better than ±1% |
| Ammeter accuracy |
±1% (2–63A), ±2% (1–2A), ±5% (0–1A) |
| Available measurements |
Active and apparent power, active and apparent energy, power factor, fundamental reactive energy |
| No-load threshold |
30 VA |
| Data storage |
| Local history |
up to 7 days |
| Storage resolution |
1 minute |
| Data export |
CSV / JSON via RPC |
| Connectivity |
| Wi-Fi |
802.11 b/g/n |
| Bluetooth |
4.2 |
| Smart features |
| MQTT |
Yes |
| Scripting |
Yes |
| Webhooks |
Yes |
| Scheduling |
20 |
| Web interface |
Yes |
| Compatibility |
| Platforms |
Android, iOS |
| Sensors and protections |
| Internal temperature sensor |
Yes |
| Phase sequence detection |
Yes (optional) |
| Operating conditions |
| Operating temperature |
-20°C to +40°C |
| Humidity |
30%–70% RH |
| Dimensions |
| 3EM-63W Gen3 |
21 x 54 x 42 mm |
| 3EM-63T Gen3 |
31 x 54 x 42 mm |
| Hardware |
| CPU |
ESP-Shelly-C38F |
| Flash memory |
8 MB |
